An Algorithm for the Generalized Matrix Eigenvalue Problem Ax = Lambda Bx
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Abstract : A new method, called the QZ algorithm, is presented for the solution of the matrix eigenvalue problem Ax = lambda Bx with general square matrices A and B. Particular attention is paid to the degeneracies which result when B is singular. No inversions of B or its submatrices are used. The algorithm is a generalization of the QR algorithm, and reduces to it when B = I. A FORTRAN program and some illustrative examples are included.